function chk2(){
	if(document.getElementById("categoryId").value!="카테고리"){
		$("#error0").html("");
	}
}
function chk3(){
	if(document.getElementById("name").value!=0){
		$("#error1").html("");
	}
}
function chk4(){
	if(document.getElementById("price").value!=0){
		$("#error2").html("");
	}
}
function chk5(){
	if(document.getElementById("brand").value!=0){
		$("#error3").html("");
	}
}
function chk6(){
	if(document.getElementById("modelNo").value!=0){
		$("#error4").html("");
	}
}
function chk7(){
	if(document.getElementById("quantity").value!=0){
		$("#error5").html("");
	}
}
function chk8(){
	if(document.getElementById("description").value!=0){
		$("#error6").html("");
	}
}